High Performance Pitch Shifter

So I’m curious if anyone knows of a high performance pitch shifter. For my IceTray module I have a built in pitch shifter. For it I copied the HCTIP module from Bidoo. Its using pffft.h to do a fast fourier transform, which I understand is never going to be fast, but I thought I would at least ask and see if anyone had any ideas.

@synthi

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I was studying this - may be of some use to you:

DaisySP/pitchshifter.h at master · electro-smith/DaisySP · GitHub

Pitch shifting

Disclaimer: I’m a beginner.

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Have a look at VCV Library - Squinky Labs Booty Shifter too. Squinkys Modules are very CPU-friendly.

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This is a frequency shifter, not a pitch shifter.

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Yeah unfortunately I need a pitch shifter to correctly offset playback speed changes.

I did find 2 more pitch shifters. Both use less CPU but don’t sound as clean as HCTIP. That might just be the ultimate trade off.